The Phal abuse ends here.

[King_of_orchid_growing:)]

No problem. That's the problem with using acronyms sometimes. If you're not familiar with the object the term is used for, you won't know.

In case nobody said it...

Compact Florescent Light.

The CFL's usually sold for home use that can be placed into sockets used for incandescent bulbs look like thin glass tubes arranged in a coil.

There are other types of CFL's too. One of which looks like a thin glass tube arranged in a long "U" shaped. Some have only one "U", others have several "U's".

Yet other CFL's look like 2 thin glass tubes that run parallel to each other and only connected together by one end with a small or thin piece of glass.

T8's, T5's, and T12's are different kinds of florescent tubes (i.e. "shop lights"). Unfortunately I don't know what these designations stand for.

If you happen to see the acronyms HO or VHO in conjunction with the florescent tubes, they stand for:

High Output

Very High Output